Are you trying to enter a 1099G? Sounds like you are in the wrong place. Unemployment has its own spot.
You can type unemployment into the search box at the top of your return and hit find. It should give you a Jump To link to take you right to it.
Or Enter a 1099G for unemployment under
Federal on left
Wages & Income at top
Unemployment - Click the Start or Update Button
Enter your 1099G in Federal>Wages & Income>Unemployment
Go through the screens very carefully, making sure to enter any federal/state tax you had withheld from the unemployment.